Adding Multiple Accounts to Twitterrific (Mac & iOS)

How do I add multiple accounts?

iOS

Tap on the "Accounts" button in the sidebar, or tap and hold on
your user avatar at the top left of the application, to bring up
the Accounts screen. From there, tap the "Add Account" button. If
you have twitter accounts set up in your device's settings, you'll
be able to add them here, or you can press the + button in the
upper right to add an account that's not on your device. If you
don't have any twitter accounts set up in your phone's settings, it
will display a sign in screen. This screen will take you to
Twitter's OAuth webpage to grant Twitterrific permission to access
your direct messages. Once you do that, you'll automatically be
returned to Twitterrific.

Mac

Press ⌘, to open the preferences panel and then click the
Accounts panel to open it. Press the + button to add a new account
and then enter your Twitter account info. You'll be taken to
Twitter's OAuth webpage to grant Twitterrific permission to access
your direct messages. Once you do that, you'll automatically be
returned to Twitterrific. You can re-order the accounts by
promoting one account up in the list using the ↑ button at
the bottom of the account pane.